<template>
<!-- 宽高比  占位  防抖（网速慢的时候） -->
    <div class="icons">
        <swiper :options="swiperOption">
             <swiper-slide v-for="(page, index) of pages" :key="index">
            <div
              class="icon"
              v-for="item of page"
              :key="item.id"
            >
                <div class="icon-img">
                <img class="icon-img-content" :src="item.imgUrl" alt="">
                </div>
                <p class="icon-desc">{{item.desc}}</p>
            </div>
             </swiper-slide>
        </swiper>
    </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.list.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang='stylus' scoped>
@import '~style/varibles.styl'
@import '~style/mixins.styl'
    .icons >>> .swiper-container
        height: 0
        padding-bottom:50%
    .icons
      margin-top: .1rem
      .icon
          position: relative
          overflow: hidden
          float: left
          width: 25%
          height: 0
          padding-bottom:25%
          .icon-img
              position:absolute
              top: 0
              left: 0
              right: 0
              bottom: .44rem
              box-sizing: border-box
              padding:.1rem
              .icon-img-content
                  display: block
                  margin: 0 auto
                  height: 100%
                  border-radius: 20px
          .icon-desc
              position:absolute
              left: 0
              right: 0
              bottom: 0
              height: .44rem
              line-height:.44rem
              text-align: center
              color: $darkTextColor
              ellipsis()
</style>
